I hope you're not a business major, logic would state that parting out would give you the best results since everyone that's commented has only wanted half of what you're selling. I bet if you sold the black for $20 you could sell the white for $20 making 5 bucks more than selling them together to 1 person, I mean, who do you think wants them both? Not everyone is always changing the look of their bold.... Just my 2 cents